Test preparation

UPSE conducts an annual exam for various posts like IAS/IPS/IRS etc jointly. This exam contain three phases
1. prelim for screening
for preparation of this portion you should read ncert books, yojna magzine, news papers etc
2. mains
it gives you to yous two optional subjects along with three compulsory subjects GS 1&2 and English
for this section you can choose civil engineering as an optional subjects so you can also appear in IES exam simultaneously.
Bipin Chandra's history a good book for other portion
you should go to the upse website, download the syllabus and previous questions to get an idea according to your understanding.
3. Interviews
final selection is based on last two steps only.

Hi Rudrajit,
N factor is very important for numerical problem in chemistry . N-factor of an acid is its basicity. It is a product of molarity \ normality . N-factor helps in determining the gram equivalent of compound . total h+ ion in a compound shown in reaction is its n-factor. Eg:- H2(SO4) has two hydrogen if one hydrogen is utilised in a chemical reaction then n-factor is 1 if both hydrogen is utilised then 2 is n-factor. Similarly in bases too. In NaOH acidity of this compound is . this means n-factor is 1. let a reaction be :- NaOH reacts with H2(SO4) to form Na2(SO4) with water . here both hydrogen of acid is used so n-factor is 2 for acid and always n-factor of NaOH is 1.
All the best.